I have been flying the 3w 220cs for a couple of years now. It's an insane amount of power and super smooth throttle transition in my IMAC bird. I would say that this engine or any 4 cyl is too big for your 118" Carden. It really needs to be in the bigger Carden pro, dalton 300ml, comp arf, or stretched krill.
The 3w 220 is one of the best engines I've run to date. I've run quite a few props on it and I really like the Falcon 31x14 for IMAC.
Here is a picture of the engine when I was first installing it on my Dalton 300ml
Garrett Morrison
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